diff --git a/en/constants/index.html b/en/constants/index.html
index 2d38662..db9af1c 100644
--- a/en/constants/index.html
+++ b/en/constants/index.html
@@ -168,7 +168,7 @@ <h3>Python Reader</h3>
                 <h1>Constants</h1>
                 <hr/>
 
-                <p>Constant are really variables that represent quantities that <b>don’t change</b> while the program is running. Variables, on the other hand, often do change. Constants are written in a special way so that programmers know that they will not change. For example, consider this program which can tell you the number of seconds in a given number of minutes:</p>
+                <p>Constants are really variables that represent quantities that <b>don’t change</b> while the program is running. Variables, on the other hand, often do change. Constants are written in a special way so that programmers know that they will not change. For example, consider this program which can tell you the number of seconds in a given number of minutes:</p>
 
                 <pre class="language-python"><code>"""
 File: constants.py
@@ -234,4 +234,4 @@ <h2>Definining Constants</h2>
 
 </body>
 
-</html>
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+</html>